Category Archives: Political Polarization

An Early Look at Polarization in the 114th Congress

Now that the 114th House has conducted 66 roll call votes and the 114th Senate has voted 53 times, we now have enough data to take a very preliminary look at ideological polarization in the new Congress. Following standard practice, … Continue reading

Posted in 114th Congress, Political Polarization | Leave a comment

An Update on the Presidential Square Wave

Below we plot the first dimension DW-NOMINATE Common Space scores of the presidents in the post-war period, which we refer to as the “presidential square wave” due to its shape. An ideological score is estimated for each president throughout the … Continue reading

Posted in 113th Congress, Contemporary American Politics, Political Polarization | Leave a comment

House and Senate Polarization 1879 – 2014

Below we show the polarization of the Political Parties for the 1879 through 2014 period (46th to 113th Congresses). Polarization is measured by the distance between the means of the Democrat and Republican Parties on the first (Liberal vs. Conservative) … Continue reading

Posted in 113th Congress, Political Polarization | Leave a comment

Senate Polarization after the 2014 Elections

Though partisan polarization has increased dramatically in both chambers of Congress over recent decades, it has beenmore pronounced in the House than the Senate. There is reason to believe that yesterday’s midterm elections will narrow this gap, increasing the ideological … Continue reading

Posted in Contemporary American Politics, Political Polarization | Leave a comment

Southern Realignment through the 2012 Elections

Below we provide updated data on the southern realignment through the 2012 elections. Continuing gains among white voters has led to an increasingly Republican South (which we count as the 11 states of the Confederacy plus Kentucky and Oklahoma). In … Continue reading

Posted in Contemporary American Politics, Political Polarization | Leave a comment

Voters’ Ideological Perceptions of 2014 Senate Candidates

In this post we use Bayesian Aldrich-McKelvey scaling to analyze voters’ perceptions of the ideological positions of Senators and Senate candidates who will be running in close races in 2014 (we also describe the Bayesian Aldrich-McKelvey scaling method in our … Continue reading

Posted in Contemporary American Politics, Issue Scaling, Political Polarization | Leave a comment

An Update on the Presidential Square Wave through 2013

Below we plot the first dimension DW-NOMINATE Common Space scores of the presidents in the post-war period, which we refer to as the “presidential square wave” due to its shape. An ideological score is estimated for each president throughout the … Continue reading

Posted in Contemporary American Politics, Political Polarization | Leave a comment

DW-NOMINATE Video, 1789-2013

Tweet

Posted in American Political History, Political Polarization | Leave a comment

An Update on Polarization through the First Year of the 113th Congress (Part II)

Note: Raw data and additional graphs tracking congressional polarization can be found at: http://voteview.com/political_polarization.asp. In our earlier post, we showed that polarization between the parties in Congress continued to rise through 2013: setting new records in both chambers. One natural … Continue reading

Posted in Political Polarization | Leave a comment

Political Polarization and Income Inequality

Two topics that will likely get a lot of attention in President Obama’s State of the Union address are gridlock and income inequality. In this post, we detail how trends in income inequality and political polarization are strongly intertwined with … Continue reading

Posted in Contemporary American Politics, Political Polarization | Leave a comment